Windshield cleaner



n April 25, 1933. yR. M. cRlTcHr-'lr-:LD ET AL 1,906,047

WINDSHIELD CLEANER Filed Feb. 20, 1929 4 Sheets-Sheet l April 25, 1933.

R. M. CRITCHFIELD El' AL WINDSHIELD CLEANER Filed Feb. 20

, 1929 4 Sheets-Sheet 2 April 251`933- R. M. cRlTcHFu-:LD ET A1.1,906,047

WINDSHIELD CLEANER Filed Feb. 20, 1929 4 Sheets-Sheet 5 WINDSHIELDCLEANER Filed Feb. 20, 1929 4 Sheets-Sheet 4 MS uw RS R. M. CRITCHFIELDEl' AL April 25, 1933.

Patented Apr. 25, 1933 PATENT OFFICE UNITED sTATEs ROBERT I.CBITUBJ'IELD AND JOHN W. LAWSON, 0F ANDERSON, INDIANA, ASSIGNORS TODELCO-Rm CORPORATION, Ol' ANDERSON, INDIANA, A CORPORATION OF DELAWAREWINDSHIELD CLEANER Application led February 20, 1929. Serial No.341,489.

This invention relates to windshield cleaners and particularly to dualdevices of this class which may be automatically operated, and it is oneof the objects of the invention4 to provide a windshield cleaningconstruction employing two separate cleaning'elements, both of which maybe positively operated.

Another object of the invention is to rovide an automatic stopmechanism, w ich will insure that the cleaning mechanism will alwayscome to rest at one and the same position.

Another object of. the invention is the provision of mechanism which,though inaugurated at an intermediate point of the cycle of operation,will not become effective to produce a secession of operation until themechanism has come near the end of its cycle of operation.

Another object of the invention is the provision of means stopping theoperation 'of the mechanism by predetermined movement of a portion ofsaid mechanism. y

Another object of the invention is the provision of means for preventingthe mech- `anism from coasting beyondl a certain point after secessionof the operation has been inau rated.

other object of the invention is to provide means for shiftingthe`wiping mechanism of the device to a parking position,or out of thegeneral line of vision, Whennot to be used for cleaning of thewindshield.

Another object of the invention is to provide for stopping of the wiperat the end of the stroke regardless of the coasting distance of themotor.

Another object of the invention is to provide for housing the operatingstructure withinthe body of the vehicle,y and under the instrument boardof the drivers compartment. n

Another' object of the invention is to mount the operating structure ofthe windshield cleaner under the cowl of the vehicle so as to present amore sightly appearance of the fittings about the windshield.

Another object of the invention is to more adequately protect theoperating mechanism of the windshield cleaner from foreign matter andweather elements.

Further objects and advantages of the present invention will be apparentfrom the following description, reference being had to the accompanyingdrawings wherein a preferred embodiment of one form of the presentinvention is clearly shown.

In mechanisms of this class it has commonly been the practice to mountthe windshield wiper and the motion translating mechainsm thereforoutside of the vehicle body, and under the visor near the top rail ofthe windshield. This form of structure presents rather unsightlyappearance, which is contrary to the present trend of automobile design.Aside from being unsightly, this method of construction exposes thepower elements and driving instrumentalities to all the dust, dirt andweather elements that the vehicle may encounter, all of which materiallyeffect the eicienc of operation and the longevity of the device.

In overcoming these undesirable features we have provided a novelconstruction in a windshield cleaning device which we have mountedwithin the vehicle body, preferably under the cowl and behind theinstrument board where the device is protected from all deleteriouselements, yet is entirely out of sight except for the wiping arms on the-outside of the windshield. We have also discovered that the wiping armsof the mechanism may be moved from the normal working position, in whichthey move over the surface of the windshield in the usual manner, to aposition entirely without the windshield field of vision and we havetherefore provided means for moving the wiping elements from the workingposition to the non working, or parking position as we have termed it.'We have further discovered that the wiping mechanism may be caused tostop at' a certain point in its cycle of movement, irrespective of thepart of the cycle at which the stopping function is inaugurated, and wehave therefore provided means for insuring that the wiping mechanismwill always be stopped at the same point in its cycle of movement. i

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'4 made. 1

an end bearing 55 for the rotor shaft 56 of the motor. In one legvof themagnet yframe 51there is mounted a pole core 57 Which supports the polewinding 58 and the pole shoe 59. The opposite leg of the magnet l frameis deformed to provide the pole piece 60, all of which appears in theillustration of 8. y

Eachof the motor brush carriers 53 and .l0 54, arepivotally andinsulatinglly1 mounted upon thev bridge liece 52 of t e magnet frame bymeans o the collared or flanged ins 61 and 62 respectively, eachsupported y the insulated bushings 63 and washers 64. The pin 61 alsocarries a lane washer 65, a lock washer 66 vand a c amping nut 67 whichwhen threaded onto the threaded end of the pin 61 tend to securely holdthe in 61 in place uponzthe brid iece 52. 9 n order to be utilized asthe binding post, 4the pin 61 is further provided with a' lock washer 68and a clam ing'nut 69.' The pin 62 terminates beyon .the bushing 63 in apeened head 70 turned over against the washer65. y

Each of the motor brush carriers 53 and 54, are provided with a contactblock 71 arranged to `contact the commutator 72 of the rotor 73, and areke t in engagement therewith by means of t e spring 74, anchored tospring holders 75 received in'aperturesl 76 of each brushy holder. Thespring 74 tends to keep the brush carriers 53 and 54v seated upon, 'andin contactingengagement with their res tive pivot pins 61 and 62. Eachvof the gee i I provided near their pivotalgends with minal attachingtab 77, to which thefleads of the-various electrical connections are Tothe free ends thereis attachedfthe gear housing 80,

' bodyo thehousing 80. The housing 80, in`

addition-.to providing means for connection f with the magnetk frame 51,contain a sub-` stantial `part ofthe motion translating Abe 'operated`by a rak bar 98, movable ythrou han a rture the lug 92. Each mechanism,and provides a second bearing 82 for the motor shaft 56.' On theextendedend of the shaft 56 a worm thread 83 is pros 4vided which has engagementwith a worm wheell84 fixed-to the driving shaft"85, jour-i nalled in thehollow boss 86. A.

The motor shaft 56 is provided Vwith a ball thrust bearing 87,supported` by the bridge portion 52 of the magnet frame, and

" with an adjustable thrust bearing at the op-.L

te end by means of the' set screw 88, LandI lock nut 89 cooperating withthe part of the housing adjacent the crowned end of the motor shaft 56.These bearings insure proper adjustment of the motor with- 66 initsbearingsand provide a means of relstuds 32.` rush holders 53and-54ansar'e provided for-Shifting ai@ m0# torf and thel motiontranslating mechanism within these elongated openings in the folducingto a minimum motor operating noises, usually found in such devices. y

It will be noted from Figs. 8 and 9, that the hollow boss 86 projectsboth inwardly and outwardly from the wall of the housing 80, and inaddition to providing a bearing for the shaft also provides means forreceiving the end of the sleeve 90 which houses the extended portion ofthe shaft 85. The gear housing 80, and the attached motor 50 haveprovision for engagement with the mountinv brackets34 and 35, as'hasbeen earlier stated, and it is clear from the illustration of Figs. 3yand 9 that the screws 40 are driven through the apertured arms 39 of thesaid brackets, and are threadedly received Iin appropriate portions ofthe members 80 and 52. 4

From all of the description that has preceded\ it is obvious that thedriving motor and the motion translating mechanism may be shifted on itsmount, that is upon the bed plate 30 to the .extent permitted by theslots 33 in the brackets 34 and 35, and the studs 32. The shaft 85 andthe enclosing sleeve 90, are4 extended suiiiciently beyon the housingBOI-from the boss 86, that they y protrudef entirely'through the rail 20to the opposite side thereof, and cons uently pro- `vision is made byenlarging t e aperture 91'thro1igh the rail 20 suiliciently to allowlateral ifting of the shaft 85 and sleeve 90, a distance elivalent tothe shifting permitted by th racke'ts 34 and 35 on the lowing manner. fThe bed plate 30 is provided-with an upstanding lu 92 havingefparallel-ears 93 and 94, w ich rovide a. support and bearings for anvadjusting screw 95. The adjusting screw 95 is provided with a doublethread on the main portionV which YcooperatesV with a similarlyAthreaded -lug 96, formed on apart of the housing 80. The screw 95terminates at one end in a pinion 97 adapted to engage and end o rthe ajusting screw is provided with pivot bearing as at thev pyramidalembossment'100 of the lear 94, and the pyramidal pointed screw 101adjustably received inv bracket 105 and the bolt and nut device 106.-

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'lhef'link 103 is provided with a, slot 107 7which with spin 108 inarecipting member 109,- mounted inta bushing ,11 secured tothe 26, ex-

interiore! which the memberil fiaprovided with asaaaual controlll.. v

or summe :invia-work Uv, :,Butarylmotion of the shaftSvliy isjtranslatedto an owllatmg movement of the mounting u' n the a n m'.- .lus b of tg5, a armor 121 wi proviesa maier driving am mi bm 122 ma 123.-The'rackbaisamnedtothecrank 121 by means of a shouldered pin 124pivota-lly supporting the rack bars on the .said crank rm, and the crank121. ftheo lside oftherail20 on which the nving-motor is fixed, thesupbracket or carriage is mounted v'which provides bearings for the-wiping maimaim the wiping mechanisms in spaced relation with thedriving shaft 85, and with each other, and provides aguideandsuportfortheremainderof themotion ities. At the central partk of thebracket 125, it is cut away or otherwise formed as at 126, to ianyinterference when shifting mechanism.l

Each end of the bracket 125 is especially provided with means for suporting and l ding one end of vthoracic rs 122 and hereinbefore referredto, and embod a 1w l stud 127 liixed totheli dlet Aand retatabl ng a ani er 128, "which rm's an anti-friction bea,fortheremoteendoftherackbarsman 12S-'as will be noted-upon reference toFigs. 1 3, 8 and 10. The remote endv vof the rack v'ha'r1r122 and 123,are providedwith the teeth A129 whichcooperate with a pinion 130 lixediymounted upon the wigg-eshaft 131 as gimeans of.v the key `182.` wipershaft is journalledwithin the tubulaibearing or sleeve 133 permanentlymounted on the `bracket 1,25 in relation with respect te'fithe idlermechanism just described, so thatthe rack bars when riding within theofthe idler 128, will'be disposed `with *teeth thereof in engagementwith the teeth of the pinion 180.' f

l" In mounting "the wiper shaft 131 within pum, -it um allociatedtherewith to 122 and 123 will likewise be shifted an the sleeve 133 thespacing and fridion washer 134 is placed between the pinion 130 and theend of the sleeve 133, and a fri@ y tion washer 135 is placed over theshaft 131 after passing thro h the sleeve 133 as as to rovide endbeaurngs for the pinidn '180,

as ring retaining Aring 136 seated il.. an annu ar groove 137 1n theshaft 131.` The shaft 131 is of sullicient length to extendsubstantially beyond-the sleeve bearing through the remaining portionAof the 20, rand to receivey or drivingly mount'the wiping mechanismwhich o glass of the windshield. e ol' riv' end of the shaft A131, isprovided IV with h liatened or non-roundeda 'i 139 W ic rivlngl' y -H uarm 140, and a spring clip 141 thereon by means of the cotter pin 142. Abiasing spring 148 is attached to the 141 and to a wiping arm 140 as at144 whi tends to -urge the wiping arm -against the windshield glass 24.

The wiping arm 140 is provided with arelatively long shank portion 145and thence bent sharply to form an offset arm 146 su rting andguidingthe wiping blade 1 is formation of the arm 140 is made in orderthat clearance may be provided .iur the protruding portion of thewindshield rail 20, and allow the wipin mechanism to b parked close tothe edge o the windshield g ass.

From the descri tion thus far, it is obvious that as soon as t eelectric motor 'u energized, that due to the train of motiontransmitting instrumentalities that the rotation of the motor shaft willbe translated, reason of the shaft 85, the. crank 121, .theraek bars 122and 123 and the inions 130, to an oscillating movement of the wipi arms140, thus enabling the windshield to be cleaned of objectionabledeposits thereon.v It will be seen that a shifting movement of thedriving mechanism will likewise remit in a' shifting movement of therackbars 122 and 123, that is, when the driving mech- ,4 anism isshifted to tle right or left as viewed v in Figs. 1, 2, 3 and 9, thanthe rackbarl l Il equal amount.

The shifting of the mechanism is adapted in one instance, to control theenergy source connected to the driving motor for operating the motiontransmitting instrumentalities, and in another instance, todetermino apoint at which the mechanism may be stopped in its cycle ofmovement. Theener controlling means is embodied in a pair of contacts 150 and 151mounted u the bracket 125, engageable under conditions, lg an actuator152 mountedk upon one of e rack bars. Both of the'contacts 150 and 151are substantially of L-formation being formed from sheet material, lll

the contact 150 being additionally formed to provide a springing leafwhich includes a contact point 154, and the offset canting lip 155,which when disposed adjacent the end of the contact 151 provide an entrymeans for the separating element 152. The contacts 150 and 151 areinsulatingly mounted with respect to one another, and the contact 151with respect to the supporting b racket 125, by means ofthe screws 156engaging an oblong washer 157, then passing through the contact 150,thence through the insulating washer 158, sleeve 159 which insulatinglysupports contact- 151. Against the contact 151, and over the sleeve `159there is placed the non-conducting washer 160. Thence the screws 156 arepassed through the spacing washer 161 and threaded into the bracket 125.Each of the contacts 150 and 151 are provided with leads, as 162 and 163respectively for the appropriate connections into the circuit of thedevice. By this construc tion it will be seen that the contact bracket151 is insulatingly supported with respect to the contact 150, and thescrews and support bywhich it is mounted.

The actuating element 152 is of non-conducting material and is mountedupon the rack bar 122 by screws 153, in such a position that when themechanism is in one extreme of its shifted position that the element152, as it is carried by the bar 122 in its reciprocable movement toactuate the pinion 130, will be free of engagement with the contactelements 150 and 151, and so that when the mechanism is shifted to theother extreme that the element 152 will be caused at a certain point inthe cycle of movement of the bar 122, to engage between the ends of thecontact springs 150 and 151.

From the description of this structure, and the illustration in thedrawings, it is seen that the current or energy led `to the Contactinelements 150 and 151, may be ycontrolle by shifting of the driving motoror the instrumentalities connected thereto, since the shifting movementwill determine whether or not the actuating element 152 will be causedto engage the contactin elements to o enor close the circuit terethroug-h. hus, to start the device, the controller member 111 isoperated so as to shift the mechanism to the right as viewed in Figs, 1,2,13 and 9, which will cause the member 152 to be disengaged from thecontacts 150 and 151, allowing them to spring together substantially asindicated in Fig.

`7,' so that the circuit may vbe .completedv therethrough which willcause ,the motor to be'energized and drive the motion transmit?V tinlginstrumentalities; f

uring the operation of the device the.. rack bars 122 and 123 willbe.re'ciprocated,'-

- x or substantially' so, and the extet'of this reciprocable movementwill beeonned' to,

limits such that the actuating element 152 will not actuate the contactelements 150 and 151, to open the circuit therethrough, but will onlyapproach the relation as 1ndicated in Fig. 7, so that as long as themechanism remains shifted to this position, operativeV relation will be`.maintained and the apparatus continue to function. When the apparatus4is shifted to the other extr'eme, or to the stopping position, then theactuating element 152 will enga e the contacts 150 and 151 near the endothe stroke of the wiper mechanism, .so as to open the electrical circuittherethrough and deenergize the motor. Due to the train ,of mechanism,and the speed with which the r`motor runs the mechanism would normallycontinue to operate or coast for a portion of a wiping cycle, but in thepresent instance means are provided for preventing the coasting of themechanism, so as to lnsure that the wiping elements will always bestopped in the same relative position irrespective of the point in thecycle of o ration at which the energy circuit is mterru ted.

he coasting eiect of the mechanism `is overcome, by providing thebracket 125 with the upstanding lugs 165 and 166, which function tosupport a buler mechanism enga it 1s shifted to the stop position.Mounted upon the lug 165 there is a buer sprin 167 which isclamped'thereto by means o a long washer 168 d' osed between the spring167 and a pair o lock washers'169,

'and secured tothe bracket by clampinlg t screws 170 threaded into thelug 165. will be noted from the illustration in Fig. 3, that the lug 165is at the lower rtion of the bracket 125 or offset from the racket 166and provides for the extension of the spring 167 into 'the ath ofmovement of t e rack bar 122. e lug 166 sup rts a pair "of tensionadjustingv screws 17(1) and 172, threaded through the lug 166 held inlocking relation thereto by the nuts 173.

The adjusting screws 171 and 172 provide a means of adjusting thetension of the spring 167 to meet the various requirements as determinedby the ratio of the gear mechanism, and the power of the motor. In eachinstance these elements are so associated with the bracket 125 and therack bar by 'which' they would be en ged, or with which they wouldcooperate t at when the-mechanism 1s shifted to the running osition therack bar 122'wil1 be free o engagement 'with the ring 1 67 but as soonas the mechanism is Eshifted to the stop positionn and beforethe rackbar 122 approaches the endl of'its cycle'of movement to the left,asviewed in Fig. 3, that the end of the rack bar 122 will engage theSpring 167 which will tendto 'restrain the mechanism from able with oneof the rack bars 'when v lll .Si se the thmilsh n" tionand is erall b llthefelten. 'Thepositionto 'ch theyari is'knoyed when the 'sin isstopped, which the arm iaparked close to the edge windshield isindicatedgenerally at Likewise, one extreme of the movement :in im 12s isLindicated .s in che ,ramp 1 'tion at R', and atv the rki Jrs' I8 lt I.-th tvp: ythe spring 167 are indicated at B" .le 5P v yf Iii operation ofthis mechanism, once .thatit has been assembled on the vehicle adjusted,when it is desired a mechanism `its operation, the

111 1s pulled outward] met bami` isc, which 9;,8. tantum. che shiftP 5,Wlncligu` tura will shift the F. 1 d 9 i, the. its viii i from betweenche com 15o H the Si .$11.

the circuit to be comthrough the contacts which will themotorcausi'iigittodrive the 0 transmitting'inechanism, 'by which the 122 and123 will be Yted c, een the idler 128 and the pinion ;'fisreciprocationof the rack bars is t0 anoscillatory movement of the `i 140 andconsequently the blade attachedL thereto which tes to clean thesurtlacaofli; windshiel th mk b ,Dim operation e ars 122 l f move thearma 140.0%: the surface of.thewindshield=24, asdened by the limitsMR,iRin Figs. l and-8 and the rack bar moves tothe leftl y so far asindicated at Rf. While in this .shifted position element 159 will notopen the the contacts 150 and 151, rack har l@ engage the buleritisdasired tostop the mechanism the control button 111 is pushedinwardly 0 to e n line position as indicated'in Fig.

j through the mechanical connec- Q described shifts the motor andtlreinotien mechanismfto the left asinditedin- Figa. 1, 2

n; this picion the sawing element issn '8 and 9. In

conditioned to inaugurato an opening of the circuit through the contacts150 and 151. After the element 111 has been manipulated to sto themechanism the motor may make a numllier of revolutions before it isactuall stopped, and this number of revolutions will varyfaccording tothe point in the cycle of the operation of the mechanism at which thestopping y of the mechanism is instituted. For instance, the button 111ma be manipulated to stop the mechanism w en the wip ing arm 140 is atone end of the strok Acrit mglbe when the wipingevarm is at an -inter` m'ate point in a stro 1' It is however, immaterial when the stopping ofthe mechanism is instituted, or in other words at what int in thecycleof operation where it is esired to shift the motor and the associatedmechanism for stopping, for the motor will continue to drive the motioninstrumentalities until the element162 opens the circuit through thecntactsuO and 151.f tlmmegiat instan' blo-ei t eact stop o em anism wm:to take place, grigi: is at that int thatA the energy source isdisconnected the driving motor. Due to the speed at which the motor isdriven and the gea between it and the wiping arm, the m animi continuesto operate for a very short timedur ing which the a paratus is broughtto a standstill in the esired position.

New enter in the features of the buer mechanism, for in the shiftedwhich the motor and the motion transmitting instrumentalities are movedto the Yleft of the figures as described, the rack har '122 and the 167are in auch close uxtp position to the left hand extreme of its runn'fposition, or that position indicated the rack bar 122 will then engaget e spring 167 which will restrain it from further movement toward theleft. This in elect, will operate as a brake u n the mechanism withsucient force to ring the parte'to rest, substantially at or justbefore', the crank element 121 and pin 124 reach'dead center. Theassociation and the adjustment of these structure elements account Y,for stopping the mechanism always in the same point in its cycle ofmovement, and rovide for moving t wiping arms from t e running positionto the parking position, when ever the mechanism is stopped in itsoperation. v

From the foregoing it will be seen that we have devised a structureparticularly adaptable to be mountedwithin the antomobile bodyenclosure, with means for controlling the operation of the mechanism bya predetermined movement or shiftingy of the mechanism itself. Further,a structure liasbeen devised by which the wiping mechanism isautomatically stopped at the at when the rack bar 122 moves i 40 motorstopping means.

l 58 mechanism endof a stroke, and in which the wiping arms are alwaysmoved to a parking osit-ion at the end of the operation o the device, sothat the field of vision before the operator is always clear ofobstruction.

While the form of embodiment of the present invention as hereindisclosed, con- ,stitutes a preferred form, it is to be understood thatother forms might be adopted, all coming within the scope of the claimswhich follow.

What is claimed is as follows: 1. In a windshield cleaner, a wipershaft, motor driven instrumentalities connected l5 withsaid wiper shaft,a motor for driving said instrumentalities, said instrumentalitiesincluding a. rack bar, a bracket supporting said rack bar, contactelements supported on said bracket, and normally in circuit clos- 2 ingrelation, means'on said rack bar for actuating said contact elements tocircuit open and circuit closed relation, upon predetermined movementsof said rack bar.

2. In a windshield cleaner, a wiper shaft,

'25 motor driven instrumentalities connected with said wiper shaft, amotor for driving said instrumentalities, circuit controlling means andan actuator therefor, a bracket shiftably supporting. said motor, andmeans to shift the motor on said bracket, said actuator operable uponmanual shifting movement of said motor to actuate said circuitcontrolling means. v

3. In a windshield cleaner, the combina- 85 tion comprising, a drivinmotor, means shiftably supporting sai v motor, wiper mechanism carriedby said supporting means, motor driven instrumentalities connecting saidmotor and Wiper mechanism, u ported by said means an inthe path o? apart of said instrumentalities but normally out of engagement therewith,buffer mechanism. on said supporting means in the path of saidinstrumentalities but normally out of engagement therewith, and meansfor shifting said motor and instrumentalities for engagement with saidmotor stopping means and said buffer mechanism, whereby saidinstrumentalities will be arrested at a predetermined point in the c cleof their movement.

4. In a Windshiel cleaner, the combination comprising, a driving motor,means` plate shlftably shiftably supporting said motor, wiper carried bysaid supporting means, motor driven instrumentalities connecting saidmotor and wiper mechanism, ,circuit closing means carried by the`supporting means and so located as to be out of engagement of a movablepart of said Y driving instrumentalities in one position of said motor,and engageable by a moving part of said instrumentalities upon shiftingof the motor from said position.

05 5. In a windshield cleaner, the combination comprising, a drivingmotor, a Wiper mechanism, transmission mechanism connecting the same,means supporting said motor transmission mechanism and wiper, and meansfor manually shifting said motor and mechanism, said supporting meanscarrying a circuit opening device cooperable with said -transmissionmechanism when shifted for stopping said motor and transmissionmechanism.

6. In a Windshield cleaner, the combination comprising, a driving motor,a Wiper mechanism, transmission mechanism connecting the same, meanssupporting said motor, transmission and wiper mechanism, buffer meanscarried by the supporting means and adapted to be engaged by a part ofthe transmission mechanism, for resistin coasting of said motor andmechanisms, an means for shifting the transmission mechanism to and fromthe buffer means, whereby the same will be engaged and not engaged bythe said mechanism.

7. The combination with a' windshield and a motor operated wipermechanism therefor, comprisin a member supporting said Windshield` ansaid wi er mechanism, the driving motor the-reo? being shiftably mountedupon said supporting member, motor control means on said supportpositioned for engagement with instrumentalities driven by said motor,buffer mechanism upon said support for engagement with saidinstrumentalities, and means for shifting said motor into and out ofengaging relation with said motor control means and said buffermechanism, whereby said mechanism may be started and sto ped at apreordained point in its cycle o movement.

8. In combination, a driving motor, a bed plate shiftably mounting saidmotor, a support for said bed plate, Wiper mechanism Journalled in saidsupport, transmission mechanism connecting said driving motor and saidWiper mechanism, contacts mounted on said support, control means on saidsupport for shifting said motor on said bed plate and said transmissionmechanism on said support, means on said transmission mechanismengageable with said contacts for controlling the circuit therethroughupon shifting of said transmission mechanism.

9. In combination, a driving motor, a bed mounting saidpmotor, a supportfor said bed plate, wiper mechanism journalled in said support,transmission mechanism connecting said driving motor A'and said wipermechanism, means for shifting said motor upon said bed plate, and meansupon said support engageable by said transmission mechanism forcontrolling the operationof said motor,'upon shifting of the same. Y l Y10. In a windshield cleaneigthe combination comprising, a wipermechanism includ-V ing s wiper arm, means drivinsaid mechmism, menus forstoppin@r sai mechanisn only when the wiper reahes the end of a stiche,and means operable coincident with 5 stopping the mechanism for movingsaid wiper um to eA position beyond its wiping `-18.Inewinkhield'cleanenswi mechlnilnandidrivingmotorthen,transmlionmesnaeonneetingsaidwpermech- Il miam and driving motor,supptmg meens "dmotorsnd mism, a? motor dri through a definito eyde ofmovement, means for controlling the operation of said motor undmechanism, mennafor sctunting the enn- '*".mf mn bm 95 m" mp s on oy*means su oonn mums ment mbeimdmq iut out s; mmf. MM2

` l mov on ia ma bum opa-.bh u use the mhanismtobedminlnew V`whereby thecontrolling menne willbe 'eetmtod by nid etuetingmeansso nato stop thewiper www "1 0% it? Y ve o w o *www m2,.

. w1 an w1 open control Aswitehlera mem g Inoyedby the meclnnisn for othe m tchnndmesneiot u re ve W mhzfmdtheswitcheothsttheswitchmyremeinclosedormoybebythemeohammattheendofewlperstroke.tillnswindshieldclemntheeomggnoneomnnng,w1 mecmmmn vv. ingmot,meehmi"nseid motelwith amnmmennso onallyenglgeehh vl utofmidmotwnw mecha-b!lorstu-tingnndltoppng Y mund meenstooontroltheophnnllnpg-,sdtnnslntingmeehnmlnmduhng ltoppingmems'wheneontrolledfopthewxpetmeehogllnm test'nnonywhenofwehentonxolrBOBERTMCRITCHFIELD. JOHNWZLAWSON.

